Also referred to as SGI
Formally established in 1937 in Malmö, Sweden by Tage Andersson.
SGI moved its production to "Gamla Mejeriet" (The Old Dairy) in Bro, northwest of Stockholm, in 1939.
By 1947 the factory produced 10,000 shellac records per day and provided their own cutting and label printing.
In the 1950s, SGI gradually phased over to vinyl production and would eventually manufacture cassettes as well.
In the mid-70s, SGI merged with Nynäs Petroleum and in 1979, Tage Andersson sold his shares in the company, leaving Nynäs Petroleum as the sole owner.
While Nynäs Petroleum would own AB Svensk Grammofonindustri until its liquidation in 1997, the actual factory was sold back to the Andersson family in 1983 who founded Audiodisc AB, run by Tage Andersson's son Torbjörn.
Audiodisc moved its production to Bålsta in 2007 and the old SGI factory was demolished.